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NAS1271-5
Bolt
Description
Fastener Length: 55/64", Thread: 1/4-28, Thread Length: 31/64"
Specifications
| Extended Washer Diameter | 0.360 |
|---|---|
| Extended Washer Thickness | 0.059 inches minimum |
| Fastener Length | 0.860 |
| Features Provided | Finished head |
| Grip Length | 0.375 |
| Head Height | 0.290 inches minimum and 0.310 inches maximum |
| Head Style | Double hexagon extended washer |
| Length | 55/64 |
| Material | Titanium |
| Material Specification | As-4967 assn std single material response |
| Specification Data | 80205-nas1271 professional/industrial association standard |
| Surface Finish | 16.0 microinches threads, 63.0 microinches bearing surface of head, 63.0 microinches grip |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.485 |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
| Width Between Flats | 0.306 inches minimum and 0.315 inches maximum |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- NAS1271-5
- NAS1271-6
- NAS1271-10
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1271-5. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error